10 add vector

Adding local vector data (e.g., shp, geojson, kml) to the map

Uncomment the following line to install leafmap if needed.

In [1]:

# !pip install leafmap

# !pip install leafmap

In [2]:

import leafmap

import leafmap

In [3]:

m = leafmap.Map()
m

m = leafmap.Map() m

Out[3]:

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This demo is based on the ipyleaflet plotting backend. The folium plotting backend does not have the interactive GUI for loading local vector data.

Add a GeoJSON to the map.

In [4]:

m = leafmap.Map(center=[0, 0], zoom=2)

in_geojson = 'https://raw.githubusercontent.com/giswqs/leafmap/master/examples/data/cable_geo.geojson'
m.add_geojson(in_geojson, layer_name="Cable lines")

m

m = leafmap.Map(center=[0, 0], zoom=2) in_geojson = 'https://raw.githubusercontent.com/giswqs/leafmap/master/examples/data/cable_geo.geojson' m.add_geojson(in_geojson, layer_name="Cable lines") m

Out[4]:

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Add a GeoJSON with random filled color to the map.

In [5]:

m = leafmap.Map(center=[0, 0], zoom=2)
url = "https://raw.githubusercontent.com/giswqs/leafmap/master/examples/data/countries.geojson"
m.add_geojson(
    url, layer_name="Countries", fill_colors=['red', 'yellow', 'green', 'orange']
)
m

m = leafmap.Map(center=[0, 0], zoom=2) url = "https://raw.githubusercontent.com/giswqs/leafmap/master/examples/data/countries.geojson" m.add_geojson( url, layer_name="Countries", fill_colors=['red', 'yellow', 'green', 'orange'] ) m

Out[5]:

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Use the style_callbackfunction for assigning a random color to each polygon.

In [6]:

import random

m = leafmap.Map(center=[0, 0], zoom=2)

url = "https://raw.githubusercontent.com/giswqs/leafmap/master/examples/data/countries.geojson"


def random_color(feature):
    return {
        'color': 'black',
        'fillColor': random.choice(['red', 'yellow', 'green', 'orange']),
    }


m.add_geojson(url, layer_name="Countries", style_callback=random_color)
m

import random m = leafmap.Map(center=[0, 0], zoom=2) url = "https://raw.githubusercontent.com/giswqs/leafmap/master/examples/data/countries.geojson" def random_color(feature): return { 'color': 'black', 'fillColor': random.choice(['red', 'yellow', 'green', 'orange']), } m.add_geojson(url, layer_name="Countries", style_callback=random_color) m

Out[6]:

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Use custom style and hover_style functions.

In [7]:

m = leafmap.Map(center=[0, 0], zoom=2)

url = "https://raw.githubusercontent.com/giswqs/leafmap/master/examples/data/countries.geojson"

style = {
    "stroke": True,
    "color": "#0000ff",
    "weight": 2,
    "opacity": 1,
    "fill": True,
    "fillColor": "#0000ff",
    "fillOpacity": 0.1,
}

hover_style = {"fillOpacity": 0.7}

m.add_geojson(url, layer_name="Countries", style=style, hover_style=hover_style)
m

m = leafmap.Map(center=[0, 0], zoom=2) url = "https://raw.githubusercontent.com/giswqs/leafmap/master/examples/data/countries.geojson" style = { "stroke": True, "color": "#0000ff", "weight": 2, "opacity": 1, "fill": True, "fillColor": "#0000ff", "fillOpacity": 0.1, } hover_style = {"fillOpacity": 0.7} m.add_geojson(url, layer_name="Countries", style=style, hover_style=hover_style) m

Out[7]:

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Add a shapefile to the map.

In [8]:

m = leafmap.Map(center=[0, 0], zoom=2)

in_shp = '../data/countries.shp'
m.add_shp(in_shp, layer_name="Countries")

m

m = leafmap.Map(center=[0, 0], zoom=2) in_shp = '../data/countries.shp' m.add_shp(in_shp, layer_name="Countries") m

Out[8]:

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Add a KML to the map.

In [9]:

m = leafmap.Map()

in_kml = '../data/us_states.kml'
m.add_kml(in_kml, layer_name="US States KML")

m

m = leafmap.Map() in_kml = '../data/us_states.kml' m.add_kml(in_kml, layer_name="US States KML") m

---------------------------------------------------------------------------
AttributeError                            Traceback (most recent call last)
Cell In [9], line 4
      1 m = leafmap.Map()
      3 in_kml = '../data/us_states.kml'
----> 4 m.add_kml(in_kml, layer_name="US States KML")
      6 m

File /opt/hostedtoolcache/Python/3.9.14/x64/lib/python3.9/site-packages/leafmap/foliumap.py:1340, in Map.add_kml(self, in_kml, layer_name, info_mode, **kwargs)
   1337     if not os.path.exists(in_kml):
   1338         raise FileNotFoundError("The provided KML could not be found.")
-> 1340 data = kml_to_geojson(in_kml)
   1342 self.add_geojson(data, layer_name=layer_name, info_mode=info_mode, **kwargs)

File /opt/hostedtoolcache/Python/3.9.14/x64/lib/python3.9/site-packages/leafmap/common.py:2231, in kml_to_geojson(in_kml, out_geojson)
   2227 import geopandas as gpd
   2229 # import fiona
   2230 # print(fiona.supported_drivers)
-> 2231 gpd.io.file.fiona.drvsupport.supported_drivers["KML"] = "rw"
   2232 gdf = gpd.read_file(in_kml, driver="KML")
   2234 if out_geojson is not None:

AttributeError: 'NoneType' object has no attribute 'drvsupport'

The add_vector function supports any vector data format supported by GeoPandas.

In [10]:

m = leafmap.Map(center=[0, 0], zoom=2)
url = "https://raw.githubusercontent.com/giswqs/leafmap/master/examples/data/countries.geojson"
m.add_vector(
    url, layer_name="Countries", fill_colors=['red', 'yellow', 'green', 'orange']
)
m

m = leafmap.Map(center=[0, 0], zoom=2) url = "https://raw.githubusercontent.com/giswqs/leafmap/master/examples/data/countries.geojson" m.add_vector( url, layer_name="Countries", fill_colors=['red', 'yellow', 'green', 'orange'] ) m

Out[10]:

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In [11]:

m = leafmap.Map()

m = leafmap.Map()

In [12]:

in_shp = '../data/countries.shp'
in_geojson = '../data/us_states.json'
in_kml = '../data/us_states.kml'

in_shp = '../data/countries.shp' in_geojson = '../data/us_states.json' in_kml = '../data/us_states.kml'

In [13]:

m.add_shp(in_shp, layer_name="Shapefile")

m.add_shp(in_shp, layer_name="Shapefile")

In [14]:

m.add_geojson(in_geojson, layer_name="GeoJSON")

m.add_geojson(in_geojson, layer_name="GeoJSON")

In [15]:

m.add_kml(in_kml, layer_name="KML")

m.add_kml(in_kml, layer_name="KML")

---------------------------------------------------------------------------
AttributeError                            Traceback (most recent call last)
Cell In [15], line 1
----> 1 m.add_kml(in_kml, layer_name="KML")

File /opt/hostedtoolcache/Python/3.9.14/x64/lib/python3.9/site-packages/leafmap/foliumap.py:1340, in Map.add_kml(self, in_kml, layer_name, info_mode, **kwargs)
   1337     if not os.path.exists(in_kml):
   1338         raise FileNotFoundError("The provided KML could not be found.")
-> 1340 data = kml_to_geojson(in_kml)
   1342 self.add_geojson(data, layer_name=layer_name, info_mode=info_mode, **kwargs)

File /opt/hostedtoolcache/Python/3.9.14/x64/lib/python3.9/site-packages/leafmap/common.py:2231, in kml_to_geojson(in_kml, out_geojson)
   2227 import geopandas as gpd
   2229 # import fiona
   2230 # print(fiona.supported_drivers)
-> 2231 gpd.io.file.fiona.drvsupport.supported_drivers["KML"] = "rw"
   2232 gdf = gpd.read_file(in_kml, driver="KML")
   2234 if out_geojson is not None:

AttributeError: 'NoneType' object has no attribute 'drvsupport'

In [16]:

m

m

Out[16]:

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Last update: 2022-10-06